- Consider the unbalanced reaction equation describing the combustion of
butane.
C 4 H 10 (g) + O 2 (g) → CO 2 (g) + H 2 O(g)
How many moles of carbon dioxide could be produced if 29.0 grams of
butane reacted with an excess of O 2?
(A) 1.00 mol
(B) 2.00 mol
(C) 4.00 mol
(D) 8.00 mol
- What volume of hydrogen would be produced in the following reaction
2K(s) + 2H 2 O(ℓ) → 2KOH(aq) + H 2 (g)
if 39.1 g of potassium were completely reacted and the hydrogen gas
was collected and then stored at STP?
(A) 11.2 L
(B) 22.4 L
(C) 44.8 L
(D) 60.2 L
- After a reaction between a silver nitrate solution and copper in the lab,
45.0 grams of silver was retrieved. Stoichiometry concerning the reaction
shows that 50.0 grams was produced. The percent yield for this reaction was
(A) 100.%
(B) 95.0%
(C) 90.0%
(D) 45.0%